Causes for different spatial distributions of minimum Arctic sea-ice extent in 2007 and 2012

CUI Hongyan QIAO Fangli SHU Qi SONG Yajuan JIANG Chunfei

崔红艳, 乔方利, 舒启, 宋亚娟, 姜春飞. 2007和2012年北极最小海冰范围空间分布不同的原因分析[J]. 海洋学报英文版, 2015, 34(9): 94-101. doi: 10.1007/s13131-015-0676-x
引用本文: 崔红艳, 乔方利, 舒启, 宋亚娟, 姜春飞. 2007和2012年北极最小海冰范围空间分布不同的原因分析[J]. 海洋学报英文版, 2015, 34(9): 94-101. doi: 10.1007/s13131-015-0676-x
CUI Hongyan, QIAO Fangli, SHU Qi, SONG Yajuan, JIANG Chunfei. Causes for different spatial distributions of minimum Arctic sea-ice extent in 2007 and 2012[J]. Acta Oceanologica Sinica, 2015, 34(9): 94-101. doi: 10.1007/s13131-015-0676-x
Citation: CUI Hongyan, QIAO Fangli, SHU Qi, SONG Yajuan, JIANG Chunfei. Causes for different spatial distributions of minimum Arctic sea-ice extent in 2007 and 2012[J]. Acta Oceanologica Sinica, 2015, 34(9): 94-101. doi: 10.1007/s13131-015-0676-x

2007和2012年北极最小海冰范围空间分布不同的原因分析

doi: 10.1007/s13131-015-0676-x

Causes for different spatial distributions of minimum Arctic sea-ice extent in 2007 and 2012

  • 摘要: 卫星数据显示北极海冰范围(SIE)最小值出现在2012年9月份,其次是2007年9月份,但这两年融冰的空间分布有显著差异。本文通过分析夏季大气环流模态和海洋上层状态,解释这两年北极海冰空间分布不同的原因。利用北冰洋存在的冰-温和冰-汽正反馈机制,结果显示2007和2012年较高表面气温(SAT)和海平面气压(SAT)会伴随着更多的表面水汽(SH)和更高的海表面温度(SST),因而,向极风加强促进这两年不同海域北极夏季海冰的融化。SAT是影响海冰融化的主要因素。秋季北极SIE异常和夏季北极SAT异常的相关系数超过-84%。SAT在2007和2012年夏季不同区域的增加导致北极海冰的快速融化;与SAT有直接关系的SLP以及相应的风场也是海冰融化的促进因素。向极风加强给极区带来暖湿气流加速2007和2012年夏季不同区域的海冰融化;伴随气温升高,空气中表面SH增加和SST升高促进这两年海冰在不同区域的融化,形成两种正反馈机制。
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  • 收稿日期:  2014-08-25
  • 修回日期:  2015-03-18

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